@delCampoLab

Microbial Ecology and Evolution Lab at @IBE_Barcelona led by @fonamental. Studying marine animal holobionts🦠🪸🌊

 Barcelona - Miami
delcampolab.com
Joined February 2019
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🪸 New preprint from the lab, and a first lead-author paper for @Joanakrause99: a global meta-analysis of plastid-bearing microeukaryotes living in #corals, built from sequences most 16S studies throw away. With @BradWeilerDives and @fonamental, at @IBE_Barcelona.
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🌱 Ostreobium: six distinct clades recovered, three described here for the first time. The North West Pacific emerges as a potential hotspot of Ostreobium diversity.
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📄 Take-home: do not throw away your chloroplast reads. Plastid-derived 16S sequences carry real ecological signal, and microeukaryote-inclusive surveys are needed to understand the coral holobiont. #corals #microbiome Preprint on @biorxivpreprint: biorxiv.org/content/10.64898…

Global distribution and host specificity of plastid-bearing microeukaryotes across coral holobionts

Corals form intricate symbiotic relationships with diverse microbial communities that influence their physiology, evolution, and ecological function. In 16S rRNA gene microbiome analyses, sequences...

biorxiv.org
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Yesterday, @Joanakrause99 presented the latest advances in her PhD research at the ΣPhD Ecological Symposium at @ceabcsic! 🦠🔬 Amazing work, Joana, keep it up!
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del Campo Lab retweeted
Javier del Campo@fonamentalSep 1
Bleaching is an ecosystem collapse that plays out inside single cells. This was the final chapter of Anthony's PhD, and I could not be prouder 🙌. With @Cnidarians_Rock, @coralprof and colleagues at @MiamiRosenstiel & @IBE_Barcelona. OA at @MicrobiomeJ: doi.org/10.1186/s40168-026-0…

Single-cell ecology of coral-algal symbiosis breakdown

Microbiome - The symbiosis between corals and dinoflagellate algae is disrupted by heat stress, leading to bleaching and subsequent coral mortality, devastating reef habitats. Despite its...

link.springer.com
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del Campo Lab retweeted
Javier del Campo@fonamentalSep 1
That extra nitrogen is theorized to loosen the coral's control over its Symbiodiniaceae. We also saw blooms of chlorophytes, diatoms, and labyrinthulids: overlooked protists that may feed the feedback loops driving bleaching. #Protists
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del Campo Lab retweeted
Javier del Campo@fonamentalSep 1
For the first time, we tracked the prokaryotic and microeukaryotic microbiomes shifting together during bleaching: suspected nitrifying bacteria declined early, while suspected denitrifiers and nitrate reducers increased. #MicrobialEcology
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del Campo Lab retweeted
Javier del Campo@fonamentalSep 1
Finding three: mucus cells step up. A subpopulation of gland cells (mucocytes) expanded during heat stress and appears to play an active role in the bleaching response. Not passive bystanders. #scRNAseq
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del Campo Lab retweeted
Javier del Campo@fonamentalSep 1
Finding two: the host responds cell type by cell type. Gastrodermal cells showed apparent suppression of host heat-stress genes that depended on which symbiont they were hosting. #CoralBleaching
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del Campo Lab retweeted
Javier del Campo@fonamentalSep 1
Finding one: the two symbionts do not experience bleaching in the same way. O. faveolata hosts two co-dominant algal symbionts, and Durusdinium and Breviolum showed distinct transcriptomic responses, especially in transcripts involved in nitrogen cycling.
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del Campo Lab retweeted
Javier del Campo@fonamentalSep 1
Bleaching has been studied for decades with physiology and bulk genomics. But it is a cellular event, and bulk methods average it away. We heat-stressed Orbicella faveolata and read the transcriptome of each individual cell, plus 16S + 18S + ITS2 metabarcoding and photochemistry.
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del Campo Lab retweeted
Javier del Campo@fonamentalSep 1
Coral bleaching looks like a reef-scale catastrophe. But it starts as a breakdown between single cells. Led by @AMBonacolta, we watched it at that scale for the first time: the first single-cell transcriptomics of a bleaching coral 🪸 #CoralReefs doi.org/10.1186/s40168-026-0…
Four-panel figure of the coral holobiont through heat stress. Panel A: photosynthetic efficiency over time, stable in blue control corals, declining in red heat-treated corals. Panel B: photos of coral cores paling from healthy to bleached, each paired with a UMAP plot of holobiont cell types in Orbicella faveolata. Panel C: bar chart of cell-type abundance shifts during bleaching. Panel D: heatmap of gene expression changes across cell types at each stage.

ALT Four-panel figure of the coral holobiont through heat stress. Panel A: photosynthetic efficiency over time, stable in blue control corals, declining in red heat-treated corals. Panel B: photos of coral cores paling from healthy to bleached, each paired with a UMAP plot of holobiont cell types in Orbicella faveolata. Panel C: bar chart of cell-type abundance shifts during bleaching. Panel D: heatmap of gene expression changes across cell types at each stage.

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#OpenCall 🔬 @IBE_Barcelona is offering 4 JAE Intro ICU 2026 research training grants for undergraduate and master’s students interested in evolutionary biology, genomics, bioinformatics, cell biology and marine symbiosis 🧬 ⏳ 30 September 2026 👉 ibe.upf-csic.es/work-with-us…
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Fish gut microbes may help regulate ocean carbon cycling 🐟 📕Research led by @IBE_Barcelona and @MiamiRosenstiel shows that gut bacteria in marine fish may contribute to the formation of calcium carbonate particles that sink carbon to the deep ocean.  👉shorturl.at/JOZe8
Gulf toadfish. Crèdit: Javier del Campo

ALT Gulf toadfish. Crèdit: Javier del Campo

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📣 WE ARE HIRING! 📣 Join @IBE_Barcelona with a new Laboratory Technician position in @delCampoLab!🤿🦠 🧬In the #CORALPROS project investigates the protists (unicellular eukaryotes) living within corals. #JoinOurTeam 👉shorturl.at/vGg1E
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